﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace GenerateTermSynPattern
{
        class JPNUtils
        {
            /**/
            /// <summary>
            /// 转半角的函数(DBC case)
            /// </summary>
            /// <param name=”input”>任意字符串</param>
            /// <returns>半角字符串</returns>
            ///<remarks>
            ///全角空格为12288，半角空格为32
            ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
            ///</remarks>
            public static string ToDBC(string input)
            {
                char[] c = input.ToCharArray();
                for (int i = 0; i < c.Length; i++)
                {
                    if (c[i] == 12288)
                    {
                        c[i] = (char)32;
                        continue;
                    }
                    if (c[i] > 65280 && c[i] < 65375)
                        c[i] = (char)(c[i] - 65248);
                }
                return new string(c);
            }
        }
}
